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It's a shark-eat-shark world out there!

Have you ever seen a shark eating another shark? It's rarely observed in nature and most of the evidence for shark predation by another shark has usually been confirmed only from stomach contents. Not this time.

In August 2011 researchers Ceccarelli and Williamson from Australia were performing a fish census just off of Great Keppel Island which is situated on the Great Barrier Reef. While they were taking note of the local fish population they happened upon something that surprised them.

The two researchers observed the wobbegong for 30 minutes and in that time neither shark moved. It was assumed that it would take many more hours for the wobbegong to completely ingest the bamboo shark.

This event highlights just how efficient of an ambush predator that a wobbegong can be.